The Iosso AR-15/AR .308 Cleaning Kit contains six precision fit brushes to clean the upper receiver, chamber, bolt carrier, bore, bolt carrier key tube and gas tube. The gas tube brush inserts easily into the guide tube to clean the entire length without disassembly of the upper receiver, and using the gas tube brush with Iosso’s Eliminator Triple Action Oil will remove carbon build-up. The brushes are made of a premium blue fiber and the kit also includes a handle, extension rod, bore rope and patch puller. These tools allow the complete cleaning of any pistol, rifle or shotgun. Iosso Bore Cleaner and Eliminator Triple Action Oil are recommended cleaners to be used with the kit and are sold separately. MSRP: $68.99. Contact: www.iosso.com